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10 megohms is the resistance through which 10 volts would push 10 microamps of current. Input impedance is the resistance seen by a signal source when connected to the input
Often, this means there is a 10 megohm resistor in series with the input going to a virtual ground on an opamp circuit. 10 megohms is a common input impedance for a digital voltmeter.
What else can I help you with?
Input impedance of voltage amplifier?
In audio the input impedance of an amplifier is between 10 kiloohms and 20 kiloohms.
When 10 ohm resistor and 100 mega ohm resistor are connected in series then what will be the combined resistance?
100 megohm the 10 ohms completely vanishes in the tolerance of the 100 megohm resistor, in that range tolerances can exceed 20% of nominal.
How many ohm is a mega ohm?
1 megohm is 0.1 gigaohm. 1 gigaohm is 1000 megaohm. 1 megohm = 1,000,000 ohms = 106 ohms. 1 gigaohm = 1,000,000,000 ohms =109 ohms.
How does the loading effect of a voltmeter in a high-rsistance circuit compare to the loading effect in a low-resistance circult?
The voltmeter has an internal resistance, which should be as high as possible. As this resistance draws current from the circuit under test, it will affect circuit operation. This is more pronounced in a high impedance circuit because the current drawn flows through higher resistances.
Calculate the power out put of an amplifier that has an input of 15wand a gain of 25dB?
If you want to work in watts, convert 25dB to a scalling factor: 3dB = 2 x input 10dB = 10 x input 20dB = 100 x input ...25dB = 10 ^ (25/10) = 316.2 x input So the output is 15 Watts x 316.2 = 4.7kW If you want to work in dB, then convert 15 watts to dB: 10 * log |P| = dB = 10*log |15| = 11.76dB so the output is 11.76 + 25 = 36.76dB
Input impedance of voltage amplifier?
In audio the input impedance of an amplifier is between 10 kiloohms and 20 kiloohms.
How many ohms is the sending unit putting out?
Usually is the input impedance of the load 10 times higher than the input impedance of the sender. So the sender's ohms is one tenth of the load.
When testing circuits on modern vehicles the DVOM being used should have input impedance of at least?
10 mega ohms.
How do design a high voltage voltmeter?
Use a voltage divider and an standard high input impedance voltmeter connected to the low voltage output tap of the divider. Just check that: a) the voltage divider has enough resistance to minimize loading of the voltage source (The voltage divider resistance should be as high as possible). b) the voltmeter's input impedance is at least 10-20 times larger than the output resistance (impedance) of the divider. If necessary add a high-input impedance amplifier or a transducer between the divider output and the voltmeter. What is high voltage for you?
When 10 ohm resistor and 100 mega ohm resistor are connected in series then what will be the combined resistance?
100 megohm the 10 ohms completely vanishes in the tolerance of the 100 megohm resistor, in that range tolerances can exceed 20% of nominal.
What is input impedance of cro probe?
There are 2 types of CRO probes a. Active Probes (9 Megaohms) b. Passive Probes - hig voltage probe (10 to 1000 Megaohms)
Definition of low impedance medium impedance and high impedance?
For instance: A microphone rated at 150 ohms to 300 ohms is considered low impedance. About 600 to 2 000 ohms is medium impedance, and 10 000 ohms or more is high impedance.
How do you calculate the maximum input current at 120VRMS for an Avalon VT-737SP channel strip?
To calculate the maximum input current for an Avalon VT-737SP channel strip at 120 VRMS, you first need to determine the input impedance of the device, which is typically around 10 kΩ. Using Ohm's Law (I = V/R), you would divide the voltage (120 VRMS) by the impedance (10,000 ohms). This gives you a maximum input current of approximately 0.012 A, or 12 mA. Always refer to the specific device's manual for exact specifications and ensure safe operating conditions.
Definition of low impedancemedium impedance and high impedance?
There is no precise definition, but for instance: A microphone rated at 150 ohms to 300 ohms is considered low impedance. About 600 to 2 000 ohms is medium impedance, and 10 000 ohms or more is high impedance.
How much voltage or current should be applied for impedance measurement to a human body?
Since the objective is to find out the impedance between two points, it is advisable to have a meter that has a high input impedance; the higher the better. This is because when the probes are applied across the "impedance" to be measured, the input impedance of the meter is effectively in parallel with the measured impedance. So, if the input impedance of the meter is infinite, the accuracy of measurement will be 100%. Now, let us take a look at the situation on the human body: If the 2 points for measurement are selected on the same acupuncture meridian, the impedance will be lower than if you select one point on the meridian and one point randomly on the other parts of the body. If you select 2 points (not on any meridian) randomly on the human body, the impedance will even be higher. If you are using electrodes with sticky pads for skin contact, the result will be different from that measured with acupuncture needles puncturing the 2 points. Hope this is helpful. K. Kit Sum.
Relation between wave length and size of the antenna?
To decrease antenna height For transmitting a signal of wavelength λ the antenna height must be λ/4. So if we want to send a 1 Hz (λ=3*10^8 m) signal ( very very low frequency) using an antenna , its height must be 75,000 Km ( impossible to build such a huge antenna ). If the same signal is modulated to some high frequency say 88 MHZ ( λ = 3.4 m ) , antenna height needed is 0.8522 m (quite easy to construct !!! ) (88 MHZ is the starting range of Frequency modulation which exists upto 108 MHZ).
What is Impedance 10 Ohms?
Impedance of 10 Ohms refers to the measure of opposition that a circuit presents to the flow of alternating current (AC). It encompasses both resistance and reactance, which can be influenced by capacitors and inductors in the circuit. A lower impedance, like 10 Ohms, typically allows more current to flow, making it significant in applications such as audio systems and RF circuits where matching impedance is crucial for optimal performance.
